For one thing, it feels like we're still very much not confident with anything at all because everything has to be tested in real humans, in real time, before i

For one thing, it feels like we're still very much not confident with anything at all because everything has to be tested in real humans, in real time, before it's considered a valid treatment (clinical trials). I understand why clinical trials are needed — because otherwise we'd still be using mysterious compounds and procedures without having a clue if they actually work — but I believe that at some point we'd become so advanced with knowing how the human body works that we won't have to do that, and so could progress much, much faster, while knowing that our treatments work, and theoretically, instead of experimentally, proving that they should work.